At low concentrations, a chemical can exist in two forms through the following reaction: s  l assume a constant pressure for all subsequent questions (p = 1bar). (1) (5 points) at 298k, the equilibrium constant for the reaction k1 = 0.86. if you start the reaction with 0.001m of s but no l, what are the concentrations of s and l at equilibrium? will you increase the fraction of l if you increase the initial concentration of s by 10fold? if so, how much?

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

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